1.獲取當前類方法
Thread.currentThread().getStackTrace()[1].getClassName();
getStackTrace()方法介紹
/**
* Returns an array of stack trace elements representing the stack dump
* of this thread. This method will return a zero-length array if
* this thread has not started, has started but has not yet been
* scheduled to run by the system, or has terminated.
* If the returned array is of non-zero length then the first element of
* the array represents the top of the stack, which is the most recent
* method invocation in the sequence. The last element of the array
* represents the bottom of the stack, which is the least recent method
* invocation in the sequence.
*
* <p>If there is a security manager, and this thread is not
* the current thread, then the security manager's
* <tt>checkPermission</tt> method is called with a
* <tt>RuntimePermission("getStackTrace")</tt> permission
* to see if it's ok to get the stack trace.
*
* <p>Some virtual machines may, under some circumstances, omit one
* or more stack frames from the stack trace. In the extreme case,
* a virtual machine that has no stack trace information concerning
* this thread is permitted to return a zero-length array from this
* method.
*
* @return an array of <tt>StackTraceElement</tt>,
* each represents one stack frame.
*
* @throws SecurityException
* if a security manager exists and its
* <tt>checkPermission</tt> method doesn't allow
* getting the stack trace of thread.
* @see SecurityManager#checkPermission
* @see RuntimePermission
* @see Throwable#getStackTrace
*
* @since 1.5
*/
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